FlowPost FAQ
Last updated: September 11, 2026
Quick answers for merchants sending transactional email with Shopify Flow. For step-by-step setup and recipes, see the tutorial.
What is FlowPost?
FlowPost adds a “Send transactional email” action to Shopify Flow. Emails go through your own SMTP or email provider and domain — not a shared FlowPost inbox.
Do I need Shopify Flow?
Yes. Install Shopify Flow first, then FlowPost. Create a workflow (for example Order created) and add the FlowPost action.
How do I send my first email?
Connect a provider in Settings, send a test email, open Templates, copy a template into Shopify Flow’s FlowPost action, then check Logs.
Where is the FlowPost action in Shopify Flow?
In a workflow, click Add action and search for “Send transactional email” or “FlowPost”. If it’s missing, reopen FlowPost from Apps once, then refresh Flow.
Which providers are supported?
SMTP, Gmail / Google Workspace, Microsoft 365, Amazon SES, Resend, SendGrid, Mailgun, and Postmark. You can set a primary provider and an optional fallback.
Why does Gmail or Outlook login fail?
Many personal Outlook accounts block basic SMTP auth. For Gmail, use an App Password (with 2-Step Verification), not your normal password. Host and port are filled when you pick Gmail or Microsoft 365 in Settings.
Where do emails come from?
From the From address and domain on your chosen provider. FlowPost does not send from a shared FlowPost domain.
Why do I still see {{ order.name }} in the email?
Liquid only runs inside Shopify Flow action fields. Paste subject/HTML into the FlowPost action (not a plain note). Use an order or fulfillment trigger so those variables exist.
How does billing and the trial work?
You get a 7-day Trial with full access. After that, choose Starter, Growth, or Scale on Pricing. There is no permanent free sending plan — if the trial ends, sends pause until you pick a plan.
What happens if I go over my plan limit?
On Starter and Growth, sending pauses when you reach the included monthly quota. Upgrade in Pricing to continue. Scale includes unlimited emails.
Can I attach files?
Yes. In the Flow action, use Attachment URLs — one HTTPS URL per line (max 5, 5MB each). Available on Trial and paid plans.
Where can I see sent emails?
Open FlowPost → Logs in Shopify Admin. Retention length depends on your plan. Failed sends with a saved body can be retried from Logs.
How do I test a template?
Open Templates, pick one, and use Send test. You’ll get a sample order (items, totals, address). Copy the HTML into Shopify Flow for live order variables.
How do I get help or request a feature?
Email info@avoits.com anytime (24/7). Include your shop domain. For new ideas, put “feature request” in the subject.
Need more help?
Read the documentation or setup tutorial. Support: info@avoits.com.
FlowPost by AVOITS. Support: info@avoits.com.