Compare email platforms
Compare SendMailOS and Resend for campaigns, APIs, replies, AI tools and sending costs. See hosted and own-server trade-offs before you choose.
Use hosted delivery, or connect your own sending server on a paid plan. Campaigns, contacts and reports stay in the SendMailOS application.
Resend provides managed transactional and marketing email, with API, SMTP, dashboard and agent tooling.
Build campaigns and visual workflows. Template Studio MCP creates structured, editable templates; it does not send campaigns or change workflows.
Resend supports Broadcasts, automations and MCP/agent tools. AI tooling is a capability to compare on both platforms.
Configure receiving and reply capture for future supported sends; follow conversations in Inbox.
Resend announced Inboxes on 22 October 2026: threaded shared inboxes with assignments, notes and API access.
Compare your active subscriber count, connected servers, hosted use and the other feature limits.
Transactional plans meter sent/received email; marketing plans use contact tiers. Include both if your workflow needs both.
Checked 24 October 2026 using the official sources below. This is a SendMailOS comparison, not an independent performance test.
Starter includes 10,000 active subscribers, one connected server and 25,000 hosted emails per billing month. Emails actually sent through your connected server have no monthly platform email quota and do not use hosted credits.
Your VPS is billed separately. Warm-up, fair use, server capacity, subscriber limits and other plan limits apply. A connected server does not guarantee inbox placement.
See how own-server sending worksResend lists Pro transactional at US$20/month for 50,000 emails and Pro Marketing at US$80/month for 10,000 contacts. These are different products and allowances, not a combined quote. Check current add-ons and usage rules on Resend’s pricing page.
SendMailOS prices are in EUR. Competitor USD examples are labelled US$ and are not converted. Billing terms, taxes, selected features and usage can change the final invoice. Entry examples are not equal-capacity quotes.
For a newsletter audience of 10,000 active subscribers, compare SendMailOS Starter’s one connected server with Resend’s 10,000-contact Marketing tier. Add any transactional plan, automation usage or inbox extras your real workflow needs. Do not compare a transactional email quota with a contact-based marketing plan as if they were identical.
10,000 active subscribers, 100,000 own-server recipient sends per month and one suitable server: Starter €12 + an illustrative €8 monthly VPS estimate = €20/month. This assumes the server can handle that volume under warm-up and sending safeguards. It is not a VPS quote, a capacity promise or a hosted-send quote. The separate Starter hosted allowance remains 25,000 emails.
Consider SendMailOS when you want a managed campaign workspace and the option to run delivery from your own server. Test template editing, a real workflow and the reply path with your team.
Evaluate Resend when its SDKs, developer workflow, agent tools or shared Inbox behavior fit your application. Existing working integrations and operational requirements matter as much as entry prices.
List required integrations, audience fields, message types, exclusions, schedules and reports. Preserve consent records and suppression states separately from active subscribers.
Recreate one application message and one newsletter. Check personalization, suppression, webhook signatures, retry behavior and a reply conversation. Verify which AI actions require approval and which are actually supported.
Check the received message, delivery events, links, personalization, unsubscribe and any reply path using mailboxes you control. A recorded open is not proof that a person read the email; an accepted message is not an inbox-placement guarantee.
Verify your domain and selected route, reconcile audience counts and pause the previous workflow before enabling its replacement. Plan a gradual sending transition and retain the source export for recovery.
25,000 hosted emails per billing month.
10,000 active subscribers.
1 connected sending server.
100,000 hosted emails per billing month.
50,000 active subscribers.
3 connected sending servers.
250,000 hosted emails per billing month.
250,000 active subscribers.
10 connected sending servers.
Every paid plan includes own-server access. More than 10,000 active subscribers or more than one connected server does not fit Starter. Domain, team, automation, API and other limits also apply.
Check every plan limitNo. Resend also provides MCP and agent tooling. SendMailOS Template Studio MCP focuses on creating and editing structured templates, with additional read scopes where approved.
Yes. Resend announced threaded Inboxes on 22 October 2026. Compare its shared-inbox and API behavior with the SendMailOS reply-capture workflow you need.
Only after matching the audience, message types, volume and required features. Resend separates transactional and marketing plans; SendMailOS own-server estimates add the eligible subscription and your server cost.
Reviewed by SendMailOS on 24 October 2026. Product documentation supports the scoped facts above; live behavior and suitability still need testing with your setup. Recheck current prices and limits before purchase.
Competitor names identify the compared products. No affiliation or endorsement is implied.
Start with 3,000 free hosted emails per billing month and up to 2,000 active subscribers. Own-server delivery starts on Starter from €12/month, with VPS costs and plan limits.