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Email marketing and transactional email limits

What each email platform caps and charges: free-plan subscribers and sends, monthly sends and daily limits per plan, the price at the entry subscriber band, overage and auto-upgrade rules, seats and automation limits, API rate limits for transactional senders, copied from Kit, MailerLite, Brevo, beehiiv, Mailchimp, ActiveCampaign, Klaviyo, Resend, Postmark, SendGrid, Loops and Buttondown on the check date.

12 tools. Last checked October 30, 2026. JSON · AI plan limits · SaaS usage limits

Pricing matrix

Search by name. Open a row for every plan, every rate and the vendor's exact wording.

ToolUnitFreeEntry planKey ratesOverageDetailsChecked
Kit (ConvertKit)KitPer subscriber bandPlans are priced by subscriber count. Subscribers are the total number of subscribers you can manage in your account, and are only counted if they are unique and active.Free plan for up to 10,000 subscribers, with unlimited landing pages and forms, unlimited email broadcasts, audience tagging and segmentation, and selling digital products and subscriptions. 1 user. Kit branding cannot be removed. Paid plans have a 14-day free trial with no credit card required.Creator · $33/mo annual$33/mo, $390 billed yearly, for 1,000 email subscribers
  • Up to 10,000 subscribers Free plan subscriber limit
  • 1 / 2 / Unlimited Users per plan (Free / Creator / Pro)
  • Unlimited email broadcasts Email broadcasts
Not publishedNot stated on the fetched pricing page.Oct 30, 2026
MailerLiteMailerLitePer active subscriber tier (plus monthly email sends)Pricing is based on the number of active subscribers and the volume sent. Billing counts subscribers with an Active status; unsubscribed and bounced contacts don't count. Any address that was active during the billing cycle counts, even if deleted later.Free plan: up to 250 subscribers, 2,500 monthly emails, 2 user seats, 3 active automations (5 automation steps), 3 active forms, 1 website and 1 landing page, 1 digital product or booking, knowledge base support. New accounts also get a 14-day premium trial with the same 250-subscriber / 2,500-email limits.Comfort · $12/moStarting price. Price scales with subscriber tier (tiers from 500 up to 200,000 subscribers). Annual billing gets a 10% discount.
  • 2,500 emails per month Free plan monthly email sends
  • 10x the top of your subscriber tier each month (e.g. 10,000 emails on the up-to-1,000 tier) Comfort monthly email sends
  • 50,000 monthly emails Comfort monthly email sends at 5,000 subscribers
Auto-chargePaid plans: when active subscribers or monthly sends exceed the plan limit, the plan upgrades automatically to the next tier and the card on file is charged a pro-rated amount. After an upgrade triggered by sends, the plan returns to the tier matching your subscriber count at renewal. Free plan: sending (campaigns and automations) is locked above 250 active subscribers until you upgrade or remove subscribers.Oct 30, 2026
Brevo (ex Sendinblue)BrevoPer email sent (monthly email volume tiers)Paid plans are tiered by monthly email sends; for pay-as-you-go credits, one email sent equals one credit deducted.Free plan: up to 300 emails per day once the account is approved for sending; single user; up to 100K contacts; marketing automation limited to 2,000 contacts; Brevo branding cannot be removed.Free · $0Free forever, no credit card needed
  • 300 emails per day Free plan daily send limit
  • From 5,000 emails per month Starter minimum monthly sends
  • From 150,000 emails per month Professional minimum monthly sends
Not publishedPay-as-you-go credits can be bought, or the account can move to a monthly plan; one email sent equals one credit deducted.Oct 30, 2026
beehiivbeehiivPer subscriber band (active subscribers)Price depends on the plan type and the plan tier, which is set by the total active subscribers across all publications in the workspace. beehiiv counts unique email addresses subscribed to your publication.Free plan, free forever with no credit card required: up to 2,500 subscribers, unlimited email sends, 1 team seat, 1 publication. beehiiv branding cannot be removed on the Free plan. Automations are not included. New accounts can also start a 14-day free trial of Pro features with no credit card.Lite · $49/mo annualPer month, billed yearly, at the pricing page's 1,000-subscriber setting
  • Unlimited Monthly email sends (all plans)
  • Up to 2,500 Free plan subscriber limit
  • Up to 100,000 Lite plan subscriber limit
Auto-chargeNo per-email overage. Pricing is by active-subscriber tier. You can turn on an option to auto-upgrade your plan tier when you reach your subscriber limit, and you are charged a prorated amount for the next tier. If it is not turned on, sends to your subscribers may be delayed when you go over your plan limits. When you reach your plan type's limit, you must upgrade to the next plan type.Oct 30, 2026
MailchimpIntuit MailchimpPer contact tier (with monthly send allowance)Price is set by the contact tier you choose. The tier sets your contact limit and your sending limit. Subscribed, unsubscribed, and non-subscribed contacts all count toward your contact total.Free plan: up to 250 contacts, 500 sends per month, 250 sends per day, 1 seat, 1 audience. Mailchimp branding cannot be removed. Email support for the first 30 days only. Standard and Essentials also have a 14-day free trial.Essentials · $13/moEntry price; the starting price includes up to 500 contacts. The pricing page prints it as "$13 /mo for 12 months".
  • 250 contacts Free plan contact limit
  • 500 per month Free plan monthly sends
  • 250 per day Free plan daily send limit
Auto-chargePaid plans: if you go over your contact or send limit, Mailchimp does not interrupt service and bills you for add-on contact blocks. Free plan: sending is put on hold until you upgrade or reduce contacts. Transactional: sending stops when you run out of blocks unless you set blocks to auto-purchase.Oct 30, 2026
ActiveCampaignActiveCampaignPer contact (contact band)Monthly price scales with contact list size; email sends are a multiple of the plan's contact limit (10x Starter/Plus, 12x Pro, 15x Enterprise).No free plan. 14-day free trial with up to 100 contacts and up to 100 emails sent, with features matching the Professional tier. No credit card needed.Starter · CustomStarts at a price per month, billed yearly for 1,000 contacts
  • Enterprise 15x, Pro 12x, Plus 10x, Starter 10x contact limit Monthly email sends per plan (multiple of contact limit)
  • Up to 100 contacts and up to 100 emails sent for 14 days Free trial contacts and email sends
  • Enterprise 5, Pro 3, Plus 1, Starter 1 Users per plan
Not publishedThe contact limit is not increased automatically. You raise it yourself in the Billing & Upgrade settings, and the account shows an alert as you approach the limit. Moving up a contact band or plan has no penalties. No overage price per email is published.Oct 30, 2026
KlaviyoKlaviyoPer active profile + monthly email sendsPlans are limited by active profiles (contacts who may receive marketing emails) and by email sends per month.Free plan: up to 250 active profiles, 500 email sends per month, $5 of mobile messages per month, $5 of Composer usage per month, built-in reporting, email support for the first 60 days. You can stay on it as long as you stay within the limits.Free · $0No monthly cost while under the limits of 250 active profiles and 500 monthly email sends.
  • Up to 250 active profiles Free plan active profiles
  • 500 email sends per month Free plan monthly email sends
  • $5 of mobile messages per month (region/carrier dependent) Free plan mobile messages
Hard stopFree plan: after going over 250 active profiles or 500 email sends in a month, the account cannot send more emails or messages until the next billing cycle or an upgrade. Paid plans: the billing upgrade preference for messages can be set to automatically upgrade, use flexible sending, or none (upgrade manually).Oct 30, 2026
ResendResendPer email (transactional) / Per contact (marketing)Transactional plans are based on the number of emails sent and received each month; multiple To, CC, or BCC recipients count as separate emails. Marketing plans are based on the number of contacts, not the number of emails sent.Free-forever plan, $0/mo: 3,000 transactional emails/month, capped at 100 emails/day (sent and received both count); unlimited marketing emails to up to 1,000 contacts; 3 domains, 3 inboxes, 1 webhook endpoint, 10,000 automation runs, 5 AI credits/mo, 30-day data retention. No free trial of paid plans. No production approval or sandbox.Pro (50,000 emails) · $20/moMonthly only; no annual plans
  • 100 emails per day Free plan daily sending limit
  • 3,000 emails / mo Free plan monthly emails
  • 1,000 contacts Free plan marketing contacts
Pay-as-you-goWith pay-as-you-go enabled, paid plans keep sending past the monthly quota and are billed in buckets of 1,000 emails at the plan's overage rate, up to 5x the monthly quota. Without pay-as-you-go, you are notified and offered an upgrade. The Free plan has no overage: requests over the daily or monthly quota get a 429 error. Over the marketing contact limit, broadcasts cannot be sent until you upgrade or remove contacts.Oct 30, 2026
PostmarkActiveCampaign (Postmark)Per emailPlans are priced by the number of emails sent and received each month; extra emails are billed per 1,000.Free Developer plan: 100 emails per month, never expires. No overages allowed. No credit card required.Basic · $15/moPrice shown at 10,000 emails/month
  • $1.80 per 1,000 emails Overage per 1,000 emails – Basic
  • $1.30 per 1,000 emails Overage per 1,000 emails – Pro
  • $1.20 per 1,000 emails Overage per 1,000 emails – Platform
Auto-chargePaid plans bill extra emails per 1,000 above the included monthly volume ($1.80 Basic, $1.30 Pro, $1.20 Platform). No overages are allowed on the Free plan.Oct 30, 2026
Twilio SendGrid (Email API and Marketing Campaigns)TwilioPer email (one email to one recipient); Marketing Campaigns also metered per stored contactEvery time you send one email to one recipient, it's deducted as one email credit from your Email API plan. This occurs whether the email is ultimately deferred or sent to spam by the inbox provider.Free trial: $0 for 60 days, up to 100 emails per day, no credit card required. The Marketing Campaigns trial stores up to 100 contacts. These limits cannot be exceeded.Marketing Campaigns Basic · $15/mostarting at $15/mo; price per contact band not shown
  • 100 emails per day for 60 days Free trial daily send cap
  • $0.00133 per extra email Email API Essentials 50K overage
  • $0.00088 per extra email Email API Essentials 100K overage
Auto-chargePaid plans are charged a per-email (and, for Marketing Campaigns, per-contact) overage fee, added to the following billing period's invoice. The free trial cannot exceed its limits. Accounts created through Heroku or Google Cloud do not allow overages.Oct 30, 2026
LoopsLoops (Astrodon Corporation)Per subscribed contact (tiered)Paid plans are priced by the number of subscribed contacts; a subscribed contact is an email address marked as subscribed. Unsubscribed contacts do not count toward pricing.Free plan: unlimited contacts stored; up to 4,000 total emails (marketing and transactional combined) to your first 1,000 subscribed contacts in any rolling 30-day window; Loops branding on emails; up to 10 emails per second.Growth · $49/moEntry tier, up to 5,000 subscribed contacts; higher tiers up to 1.5 million contacts available.
  • $49 per month Growth price, up to 5,000 subscribed contacts
  • 4,000 emails per rolling 30 days (campaigns, workflows, and transactional combined) Free plan sends
  • 1,000 Free plan subscribed contacts that receive email
Auto-chargePaid plans: tier is recalculated from subscribed contacts at renewal; if you move into a higher tier, service is not interrupted and you are billed at the new rate at the next billing date. Free plan: sending to new contacts over the 1,000 limit is restricted; transactional sends continue.Oct 30, 2026
ButtondownButtondownPer active subscriberButtondown charges for active subscribers, meaning only the people who are actively receiving your emails.Free for your first 100 subscribers. Includes the rich text or markdown editor, sending from a custom domain, hosted newsletter archives, and privacy-first features.Free (up to 100 subscribers) · $0Price shown by the pricing slider at 100 subscribers
  • +$9/month Add-on: Tagging & segmentation
  • +$9/month Add-on: Paid subscriptions
  • +$9/month Add-on: Comments and surveys
Not publishedListed prices assume at most one email a day to your entire subscriber base. If you send more than that, you need to contact Buttondown to discuss usage-based pricing.Oct 30, 2026

Questions this page answers

How much does Kit (ConvertKit) cost?
Creator: $33 per month billed annually. Everything in Free, plus unlimited Visual Automations, unlimited email sequences, Kit MCP, A/B test subject lines, polls, remove Kit branding, SMS marketing, apps & integrations, RSS campaigns, 24/7 email & chat support; 2 users. Checked 2026-10-30.
What is the Kit (ConvertKit) free plan subscriber limit?
Up to 10,000 subscribers (subscribers). Vendor wording: "Free—up to 10,000 subscribers". Checked 2026-10-30.
How much does MailerLite cost?
Comfort: $12 per month. Monthly emails equal to 10x the top of your subscriber tier, email support, 50 automations, 100 automation steps, 10 forms, 10 sites (websites and landing pages combined), 5 digital products, 3 user seats, HeyLite intelligence, full MCP & API access, unlimited templates, remove MailerLite logo Checked 2026-10-30.
What is the MailerLite free plan monthly email sends?
2,500 emails per month (emails/month). Vendor wording: "**Free plan** - Up to 2,500 monthly emails.". Checked 2026-10-30.
How much does Brevo (ex Sendinblue) cost?
Free: free to start. 300 emails/day; single user; up to 100K contacts; automation limited to 2,000 contacts; Brevo branding not removable Checked 2026-10-30.
What is the Brevo (ex Sendinblue) free plan daily send limit?
300 emails per day (emails/day). Vendor wording: "Once we approve your account for sending, you can start sending up to 300 emails per day.". Checked 2026-10-30.
How much does beehiiv cost?
Lite: $49 per month billed annually. Up to 100,000 subscribers; unlimited email sends; 2 team seats; 3 guest authors; 3 publications; 12-month analytics lookback; everything in Free plus paid subscriptions (0% take rate), ad monetization, automations, beehiiv MCP, audience polls, A/B testing Checked 2026-10-30.
What is the beehiiv monthly email sends (all plans)?
Unlimited (emails/month). Vendor wording: "No. Every plan includes unlimited email sends. You're never penalized for sending more often or for emailing your full list.". Checked 2026-10-30.
How much does Mailchimp cost?
Essentials: $13 per month. Starting price includes up to 500 contacts; up to 50,000 contacts; monthly sends 10 times your contact limit; 3 seats; 3 audiences; automation flows with up to 4 steps; branding removal Checked 2026-10-30.
What is the Mailchimp free plan contact limit?
250 contacts (contacts). Vendor wording: "The Free plan includes up to 250 contacts and 500 sends per month, with a daily send limit of 250.". Checked 2026-10-30.
How much does ActiveCampaign cost?
Starter: Starts at a price per month, billed yearly for 1,000 contacts. 1,000 contacts; 10,000 email sends / month; 1 user seat; multi-step marketing automation (5 actions per automation); 15 active business goals; up to 5 lists; 500 AI credits Checked 2026-10-30.
What is the ActiveCampaign monthly email sends per plan (multiple of contact limit)?
Enterprise 15x, Pro 12x, Plus 10x, Starter 10x contact limit (sends per month). Vendor wording: "Email sends 15x contact limit 12x contact limit 10x contact limit 10x contact limit". Checked 2026-10-30.
How much does Klaviyo cost?
Free: free to start. Up to 250 active profiles; 500 email sends/month; $5 of mobile messages/month; $5 of Composer usage/month; built-in reporting; email support for first 60 days Checked 2026-10-30.
What is the Klaviyo free plan active profiles?
Up to 250 active profiles (profiles). Vendor wording: "Up to 250 active profiles". Checked 2026-10-30.
How much does Resend cost?
Pro (50,000 emails): $20 per month. 50,000 emails / mo; extra emails $0.90 / 1,000; all Free features; 10 domains; no daily email limit; 5 webhook endpoints; 100 AI credits / mo; additional domains with add-on Checked 2026-10-30.
What is the Resend free plan daily sending limit?
100 emails per day (emails/day). Vendor wording: "| Daily limit | 100 | No limit | No limit | No limit |". Checked 2026-10-30.

How this is kept

Each record is read from the vendor's pricing page, docs or help centre on the check date; every figure carries the vendor's exact sentence and a link to the page it came from. Where a vendor publishes no number the row says "not published" and quotes their wording instead. Numbers we saw only in third-party copies, forums or cached pages are kept out of the table. Reuse the JSON with a link back (CC BY 4.0).